Cicadas are coming, but which cicadas will they be?

It's not always 17 years between emergences of periodical
cicadas. While each brood emerges only once every 17 years, there is a brood
somewhere in most years, and some locales see more than one brood emerge across
the span of 17 years.

View full sizeThe shed exoskeleton of a cicada remains where its former owners left it.MARCUS SCHNECK